35杨等黑杨派杨树无性系区域化试验

在江苏沿海、沿江和里下河地区10个市（县）,对35杨等8个黑杨派无性系进行了区域化试验。通过对7年生树干解析数据分析表明,品种间和试点间的产量水平都达显著或极显著差异。其中,35杨与7号杨各试点平均产量极显著高于其余品种（α=0.01）,苏杨18号产量显著高于72杨（α=0.05）;位于长江圩区的江宁试点产量显著高于其他试点（α=0.05）,金湖林场试点产量显著低于其余试点（α=0.05）。通过区域产量多重比较（邓肯法）结果得出各品种适栽地区：35杨在江苏各栽培区均速生高产,生长稳定性高,可在江苏全省广泛应用;苏杨7号丰产性显著优于69杨与72杨,在沿海轻度盐碱地和沿江平原地区适应性强,可在类似地推广;74杨和17号杨平均丰产性低于72杨和69杨,但74杨平均造林成活率高,在徐州地区表现出一定的生长优势,而17号杨分枝角度小,树干通直,高生长优势明显,是营建农田防护林和公路绿化的优良品种,因此可以控制推广。

Regional Cultivation test of 8 clones in aigeiros section including Populus deltoides CL '35/66'

The regional analysis test of 8 clones in aigeiros section was carried out in 10 cities and counties of areas along coast,Yangtze River and Lixiahe district in Jiangsu province.There were significant or extremely significant differences in yield in different clones and test spots by analyzing 7 years old analysis stems.In every test spot,the average yields of Populus deltoides CL 35/66＇and P.deltoides CL＇JP7＇ were significant higher than those of other clones else（α=0.01）,while the yield of P.deltoides CL ＇JP18＇was significant higher than that of P.×canadensis CL ＇72/58＇（α=0.05）.The yields of 8 clones of test spots in Yangtze polder area were significant higher than those in other areas else（α=0.05）,while the yield in Jinhu forest farm was significant lower than that in other areas else（α=0.05）.The suitable areas were chosen according to multiple comparisons： Populus deltoides CL ＇35/66＇ exhibits high yield,fast growing and high stability in every test areas;P.deltoides CL＇JP7＇ can be extended in coastal low-grade saline fields and plain area along Yangtze River in view of its higher yield.